[R] R annoyances

[John Fox]

Dear Uwe,

I've often wondered why T and F aren't reserved words in R as TRUE and FALSE
are. Perhaps there's some use of T and F as variables, but that seems
ill-advised.

Regards,
 John

--------------------------------
John Fox
Department of Sociology
McMaster University
Hamilton, Ontario
Canada L8S 4M4
905-525-9140x23604
http://socserv.mcmaster.ca/jfox 
-------------------------------- 

> -----Original Message-----
> From: r-help-bounces at stat.math.ethz.ch 
> [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Uwe Ligges
> Sent: Thursday, May 19, 2005 10:08 AM
> To: Chalasani, Prasad
> Cc: r-help at stat.math.ethz.ch
> Subject: Re: [R] R annoyances
> 
> Chalasani, Prasad wrote:
> 
> > Thanks all for pointing out that I can use 
> > 	mtx[,1,drop=F]
> 
> 
> Which, for example, won't work for
>   F <- 10.25
> 
> ---> drop=FALSE  !
>            ^^^^^
> 
> Uwe Ligges
> 
> 
> 
> > 
> > 
> > -----Original Message-----
> > From: Uwe Ligges [mailto:ligges at statistik.uni-dortmund.de]
> > Sent: Thursday, May 19, 2005 10:49 AM
> > To: Chalasani, Prasad
> > Cc: r-help at stat.math.ethz.ch
> > Subject: Re: [R] R annoyances
> > 
> > 
> > Chalasani, Prasad wrote:
> > 
> >>Dear R Folks,
> >>I'm a big fan of R, but there are a couple of things that 
> repeatedly 
> >>annoy me, and I wondered if anyone has neat ways to deal with them.
> >>
> >>(a) When using "apply" row-wise to a matrix, it returns
> >>    the results column-wise, and to preserve the original
> >>    orientation, I've to do a transpose. E.g. I've to keep
> >>    doing a transpose, which I consider to be quite annoying.
> >>	
> >>    transformed.mtx <- t(apply( mtx, 1, exp))
> > 
> > 
> > I'd rather type
> > 
> >    exp(mtx)
> > 
> > 
> > 
> > 
> >>(b) When extracting 2 or more columns of a matrix, 
> >>    R returns the result as a matrix, BUT when extracting
> >>    just one column, it returns a vector/array, rather than
> >>    a matrix, so I've to keep doing as.matrix, which is annoying.
> >>
> >>	sub.mtx <- as.matrix(mtx[,1])
> >>
> >>	Of course I could write a suitable function
> >>		cols <- function(mtx,range) as.matrix(mtx[, range])
> >>	but then I lose the syntactic sugar of being able to say "[,1]".
> > 
> > 
> > The docs suggest:
> > 
> >    mtx[ , 1, drop = FALSE]
> > 
> > 
> > Uwe Ligges
> > 
> > 
> > 
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